We have fish ponds (2 to 5 achres each), The main problem there is Foxes and forest pigs,
Foxes enter into ponds and eat fishes, and Pigs run on the banks of the ponds and spoil the nets which we keep to prevent birds.

In these two ways the production is reducing to 30 to 40% of real yield. To prevent this problem we usually ues some Divali crackers (becoming very expensive) to make them afraid but now a days this technique is also becoming useless caz those animals became habited with those sounds and not caring it.

Can some one give me some better Idea with which type of weapon is useful to make them wound and not to come back?

Don